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Apple iPhone 17 vs Apple iPhone Duo

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

AppleiPhone 17AppleiPhone Duo
Overview
ReleasedSeptember 2025Coming 23 October 2026
Display
Screen size6.3″7.6″
Resolution2622 × 12062670 × 1878
Sharpness458 pixels per inch430 pixels per inch
PanelLTPO OLEDLTPO OLED
Refresh rate120 Hz120 Hz
Peak brightness3,000 nits3,000 nits
Cover screen–5.4″, 2034 × 1398, 120 Hz
Display typeSuper Retina XDR OLED display with Dynamic IslandSuper Retina XDR OLED folding display (inner) with nano-texture finish and wide-angle OLEDs; Dynamic Island on both displays
Pixel density460 ppi430 ppi (inner); 460 ppi (outer)
Brightness detail1,000 nits max (typical); 1,600 nits peak (HDR); 1 nit minimumBoth displays 1,000 nits max (typical); 1,600 nits peak (HDR); 3,000 nits peak (outdoor); 1 nit minimum
Always-on displayYesYes
Screen protectionCeramic Shield 2 frontCeramic Shield 2 on the outer display, Ceramic Shield back; inner display has a scratch-resistant coating over a nano-textured custom polymer cover layer, high-strength glass above and below the panel and a titanium plate beneath
Display featuresProMotion adaptive refresh; HDR; True Tone; Wide colour (P3); Haptic Touch; 2,000,000:1 contrast ratio (typical); anti-reflective coatingProMotion adaptive refresh up to 120 Hz; HDR; True Tone; Wide colour (P3); Haptic Touch; 2,000,000:1 contrast ratio (typical); anti-reflective coating; Apple Pencil (USB-C) support on either display, which Apple says is coming later in 2026
Cover screen–5.4-inch Super Retina XDR OLED, 1398 x 2034 at 460 ppi, ProMotion up to 120 Hz, same aspect ratio as the inner display; measured as a standard rectangle the screens are 7.58 and 5.36 inches
Performance
ChipA19A20 Pro
Memory8 GB–
Storage256 GB, 512 GB256 GB, 512 GB, 1 TB, 2 TB
CPU6-core CPU with 2 performance and 4 efficiency cores6-core CPU with 2 super cores and 4 efficiency cores; 2-nanometre process
GPU5-core GPU with Neural Accelerators; hardware-accelerated ray tracing7-core GPU with Neural Accelerators; hardware-accelerated ray tracing
AI engine16-core Neural EngineDual 16-core Neural Engine
Cooling–Custom vapour chamber connected directly to the chip package; up to 35% better sustained performance than iPhone 17 Pro (Apple)
Cameras
Main camera48 MP48 MP
Ultra wide camera48 MP48 MP
Telephoto cameraNoneNone
Optical zoomNoneNone
Front camera18 MP12 MP
Main camera48MP Fusion Main, 26 mm, ƒ/1.6 aperture, sensor-shift optical image stabilisation, 100% Focus Pixels; 24MP and 48MP photos48MP Fusion Main, 26 mm, ƒ/1.6 aperture, sensor-shift optical image stabilisation, Hybrid Focus Pixels; 24MP and 48MP photos
Ultra wide camera48MP Fusion Ultra Wide, 13 mm, ƒ/2.2 aperture, 120° field of view, Hybrid Focus Pixels; 24MP and 48MP photos48MP Fusion Ultra Wide, 13 mm, ƒ/2.2 aperture, 120° field of view, Hybrid Focus Pixels; 24MP and 48MP photos
Front camera18MP Center Stage camera, ƒ/1.9 aperture, autofocus with Focus Pixels12MP Center Stage camera (outer), ƒ/2.2 aperture; under-display FaceTime camera in the inner display, ƒ/1.8 aperture, 1080p video (resolution in megapixels not published)
Zoom12MP optical-quality 2x Telephoto (52 mm) from the Main camera; 2x optical zoom in, 2x optical zoom out (4x optical zoom range); digital zoom up to 10x12MP optical-quality 2x Telephoto (52 mm, ƒ/1.6) from the Main camera; 2x optical-quality zoom in, 2x optical zoom out (4x optical-quality zoom range); digital zoom up to 10x (6x for video)
Video recording4K Dolby Vision at 24, 25, 30 or 60 fps; 1080p Dolby Vision at 25, 30 or 60 fps; Cinematic mode up to 4K Dolby Vision at 30 fps; Action mode up to 2.8K Dolby Vision at 60 fps; slo-mo 1080p at 120 or 240 fps; spatial video 1080p at 30 fps; Dual Capture up to 4K Dolby Vision at 30 fps; HEVC and H.2644K Dolby Vision at 24, 25, 30 or 60 fps, and at 100 or 120 fps on the Fusion Main camera; 1080p Dolby Vision up to 120 fps; Cinematic mode up to 4K Dolby Vision at 60 fps, with effects applied after capture; Action mode up to 2.8K Dolby Vision at 60 fps; slo-mo 1080p up to 240 fps and 4K Dolby Vision up to 120 fps (Fusion Main); Dual Capture up to 4K Dolby Vision at 30 fps; macro video; HEVC and H.264
Front video4K Dolby Vision at 24, 25, 30 or 60 fps; Cinematic mode up to 4K Dolby Vision at 30 fps; slo-mo 1080p at 120 fps; ultra-stabilised video; Centre Stage for video callsOuter camera 4K Dolby Vision at 24, 25, 30 or 60 fps, Cinematic mode up to 4K Dolby Vision at 30 fps, slo-mo 1080p at 120 fps; inner camera 1080p at 30 or 60 fps
Camera featuresPhotonic Engine; Deep Fusion; Smart HDR 5; next-generation portraits with Focus and Depth Control; Night mode; Photographic Styles; spatial photos; 48MP macro photography; Camera ControlSmart Take; Duo Preview and Kid Cue on the outer display; Photographic Styles 3; smart focus tracking; Photonic Engine; Deep Fusion; Smart HDR 5; Night mode; next-generation portraits with Focus and Depth Control; panorama up to 63MP; 48MP macro photography; True Tone flash; sapphire crystal lens cover; Camera Control; HEIF and JPEG; no Pro controls
Battery and charging
Battery3,692 mAh–
Video playback (maker's claim)Up to 30 hoursUp to 31 hours
Wireless chargingUp to 25 WUp to 25 W
Battery life detailUp to 27 hours streamed video playback; EU energy label class A, 41 hours per charge, at least 1,000 charge cyclesTwo lithium-ion batteries, one in each half, managed as one; up to 24 hours typical use (equal use of both displays); video playback up to 31 hours on the inner display and 44 hours on the outer; streamed video up to 26 hours inner and 37 hours outer
Wired chargingUp to 50% in 20 minutes with a 40W adapter or higher (sold separately)Up to 50% in around 20 minutes with a 60W-capable USB-C adapter or higher (sold separately); Apple doesn't give a maximum wattage
Wireless chargingMagSafe and Qi2 up to 25W with a 30W adapter or higher; up to 50% in 30 minutesMagSafe and Qi2 up to 25W; up to 50% in around 30 minutes with a 35W adapter or higher and a MagSafe Charger
Connectivity
Satellite messagingYesYes
Mobile network5G (sub-6GHz) with 4x4 MIMO; Gigabit LTE with 4x4 MIMO; UK model A3520Apple C2 modem; 5G (sub-6GHz) with 4x4 MIMO; Gigabit LTE with 4x4 MIMO; UK model A3720 (US model A3447 adds mmWave)
SIMDual SIM (nano-SIM and eSIM); dual eSIM supportDual eSIM only (two active, eight or more stored); no physical SIM
Wi-FiWi-Fi 7 (802.11be) with 2x2 MIMO; Apple N1 wireless networking chipWi-Fi 7 (802.11be) with 2x2 MIMO; Apple N1 wireless networking chip
BluetoothBluetooth 6; ThreadBluetooth 6; Thread
Ultra WidebandApple second-generation Ultra Wideband chipApple second-generation Ultra Wideband chip
NFCNFC with reader mode; Express Cards with Power ReserveNFC with reader mode; Express Cards with power reserve
Satellite featuresEmergency SOS via satellite; Roadside Assistance via satelliteEmergency SOS via satellite; Roadside Assistance via satellite; Find My via satellite; Messages via satellite in the US
USBUSB-C with charging, DisplayPort and USB 2 (up to 480Mb/s); video out up to 4K HDRUSB-C with charging, DisplayPort and USB 3 (up to 10Gb/s); video out up to 4K HDR
PositioningPrecision dual-frequency GPS (GPS, GLONASS, Galileo, QZSS, BeiDou and NavIC); digital compass; iBeacon micro-locationPrecision dual-frequency GPS (GPS, GLONASS, Galileo, QZSS, BeiDou and NavIC); digital compass; iBeacon micro-location
Design
TypeStandardFoldable
Weight177 g254 g
Thickness7.95 mm11.3 mm
Height × width149.6 × 71.5 mm117.8 × 84.1 mm
Water and dust resistanceIP68IP68
Stylus–Yes
Size unfolded–117.8 × 164.6 × 5.2 mm (height × width × thickness)
MaterialsAluminium design; colour-infused glass back (Black, Mist Blue, Sage, Lavender)Grade 5 titanium enclosure with a mirror-polished finish (85% recycled titanium); 3D-printed titanium hinge cover with a micro-blasted finish; Ceramic Shield back
ColoursBlack, White, Mist Blue, Sage, LavenderStar White, Night Sky
ButtonsAction button; Camera Control; side button; volume up/downSide button with Touch ID; Camera Control; volume up/down; no Action button
Water resistance detailIP68 (maximum depth of 6 metres up to 30 minutes) under IEC standard 60529IP68 (maximum depth of 6 metres up to 30 minutes) under IEC standard 60529
BiometricsFace IDTouch ID fingerprint sensor in the side button
SensorsBarometer; high dynamic range gyro; high-g accelerometer; proximity sensor; dual ambient light sensorsTouch ID; barometer; high dynamic range gyro; high-g accelerometer; proximity sensor; four ambient light sensors
SpeakersBuilt-in stereo speakersBuilt-in stereo speakers
MicrophonesBuilt-in microphones; Voice Isolation and Wide Spectrum modesBuilt-in microphones; Voice Isolation and Wide Spectrum modes
Software
Operating systemiOSiOS
Software at launchiOS 26iOS 27.1 (Apple's press release; the spec page lists iOS 27)
Software updatesSecurity, corrective and functionality updates for at least 5 years after it stops being sold (EU product information sheet)–
AI featuresApple Intelligence; Visual IntelligenceApple Intelligence; Siri AI (beta, English at launch, not initially available in the EU); Siri Camera mode through Camera Control
Safety featuresCrash DetectionCrash Detection
In the boxiPhone 17, USB-C Charge Cable (1 m), documentation; no power adapteriPhone Duo, USB-C Charge Cable (1 m); no power adapter

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